2 files changed, 26 insertions, 3 deletions
diff --git a/butl/fdstream b/butl/fdstream
index df6b3f1..afc3ef6 100644
--- a/butl/fdstream
+++ b/butl/fdstream
@@ -110,7 +110,7 @@ namespace butl
     close () {fd_.close ();}
 
     auto_fd
-    release () {return std::move (fd_);}
+    release ();
 
     void
     open (auto_fd&&);
@@ -380,7 +380,7 @@ namespace butl
     open (auto_fd&& fd) {buf_.open (std::move (fd)); clear ();}
 
     void close ();
-    auto_fd release () {return buf_.release ();} // Note: no skipping.
+    auto_fd release (); // Note: no skipping.
     bool is_open () const {return buf_.is_open ();}
 
   private:
@@ -458,7 +458,7 @@ namespace butl
     open (auto_fd&& fd) {buf_.open (std::move (fd)); clear ();}
 
     void close () {if (is_open ()) flush (); buf_.close ();}
-    auto_fd release () {if (is_open ()) flush (); return buf_.release ();}
+    auto_fd release ();
     bool is_open () const {return buf_.is_open ();}
   };
 
diff --git a/butl/fdstream.ixx b/butl/fdstream.ixx
index 0d3d098..884d190 100644
--- a/butl/fdstream.ixx
+++ b/butl/fdstream.ixx
@@ -30,6 +30,14 @@ namespace butl
     reset ();
   }
 
+  // fdbuf
+  //
+  inline auto_fd fdbuf::
+  release ()
+  {
+    return std::move (fd_);
+  }
+
   // ifdstream
   //
   inline ifdstream::
@@ -104,6 +112,12 @@ namespace butl
     open (f.string (), m);
   }
 
+  inline auto_fd ifdstream::
+  release ()
+  {
+    return buf_.release ();
+  }
+
   // ofdstream
   //
   inline ofdstream::
@@ -176,6 +190,15 @@ namespace butl
     open (f.string (), m);
   }
 
+  inline auto_fd ofdstream::
+  release ()
+  {
+    if (is_open ())
+      flush ();
+
+    return buf_.release ();
+  }
+
   // fdopen()
   //
   inline auto_fd